Nissha, Bharrathi Romes and Norazah, Basar and Hasnah, M. Sirat and Siti Ernieyanti, Hashim and Zaini, Assim (2018) Chemical Compositions and Tyrosinase Activity of the Essential Oils of Alpinia aquatica. Natural Product Communications, 13 (6). pp. 787-789. ISSN 1934578X
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Abstract
The essential oils obtained from the fresh rhizome, leaf, and pseudostem of Alpinia aquatica Roscoe. were hydrodistillated and analyzed using capillary gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). β-Pinene (11.7%), α-humulene (8.9%), aromadendrene (8.7%), and sabinene (7.7%) were the major components in the rhizome oil. The most abundant components of the leaf oil were germacrene D (21.3%), β-pinene (15.6%) and sabinene (12.1%), while α-humulene (19.8%), germacrene D (15.2%) and β-caryophyllene (8.7%) were the main constituents in the pseudostem oil. Antityrosinase assay revealed that all the three essential oils exhibited weak tyrosinase inhibition activities. The rhizome oil showed the highest inhibition activity with the value of 9.5% for the L-DOPA oxidation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Alpinia aquatica, Zingiberaceae, Essential oils, Tyrosinase inhibition, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology Faculties, Institutes, Centres > Faculty of Resource Science and Technology |
| Depositing User: | Karen Kornalius |
| Date Deposited: | 15 Jul 2019 02:17 |
| Last Modified: | 02 May 2021 23:01 |
| URI: | http://ir.unimas.my/id/eprint/25831 |
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